This region reflects radio waves with frequencies up to about 35 megahertz; the exact value depends on the peak amount of the electron concentration, typically 106 electrons
per cubic centimetre, though with large variations caused by the sunspot cycle.
The concentration of cloud condensation nuclei in the lower troposphere at a supersaturation of 1 percent ranges from around 100
per cubic centimetre (approximately 1,600 per cubic inch) in size in oceanic air to 500
per cubic centimetre (8,000 per cubic inch) in the atmosphere over a continent.
In smoky conditions, the team found, there are almost twice as many cloud condensation nuclei
per cubic centimetre.
Near the Sun the average density of interstellar gas is 10 − 21 gm / cm3, which is the equivalent of about one hydrogen atom
per cubic centimetre.
It has a density of 1.7 grams
per cubic centimetre like Pluto's, but less than a third that of Earth.
Detailed radio maps of nearby molecular clouds reveal that they are clumpy, with regions containing a wide range of densities — from a few tens of molecules (mostly hydrogen)
per cubic centimetre to more than one million.
They found that Pluto's density is 2.1 grams
per cubic centimetre.
Charon is less dense at 1.4 grams
per cubic centimetre.
For example, Jupiter's moon Io, whose density is 3.5 grams
per cubic centimetre, is all rock, whereas some of Saturn's moons, whose densities are 1.2 grams
per cubic centimetre, are nearly pure water ice.
Palmer says Titan has enough vinyl cyanide to make up to 30 million cell membranes
per cubic centimetre in one of its largest seas (Science Advances, doi.org/b95g).
Mars could harbour no more than one billionth of Earth's biomass, or less than one microbial cell
per cubic centimetre of soil, Sholes told the Astrobiology Science Conference in Mesa, Arizona, in April.
Polluted areas had up to 400 droplets
per cubic centimetre, while less polluted ones had as few as 50.
«To make this nuclear pasta you have to compress it to 1014 grams
per cubic centimetre — 100 trillion times more dense than water,» Horowitz says.
It reached 0.5 picocoulombs per cubic metre in areas where there were 50 particles of ash
per cubic centimetre of air (Environmental Research Letters, DOI: 10.1088 / 1748-9326/5 / 2 / 024004).
Deep space can be near empty, perhaps containing just one atom
per cubic centimetre, so vast sails would be needed to make this work.
Their densities increased from a single worm to 10,000 worms
per cubic centimetre in just 10 days (Journal of Experimental Marine Biology and Ecology, doi.org/bvwq).
Not exact matches
As well as raising IQ by 1.29, it increases the overall volume of the brain — but only by 0.58
per cent of average brain size, adding around 9
cubic centimetres of tissue.